Upper Bounce Mini Foldable Rebounder Fitness Trampoline with Adjustable Handrail Excellent low-impact aerobic workout Foam Padded, Adjustable-Height Sturdy Handrail for extra stability; Handrail has 5 positions and adjust with a knob to ensure durability Springs connect Set-wise giving it that extra bounce 6-Leg base frame and padded handle bar for sturdy grip and added stability; Easy assembly - 5 minutes Poles Slide into Frame Legs for easier assembly and safer jumping experience; Extra heavy duty welding for legs and handrail